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[BUG] Use time.unit option to create default min/max for empty chart #5045

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merged 2 commits into from Dec 15, 2017
Merged

[BUG] Use time.unit option to create default min/max for empty chart #5045

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7802e97
Create time scale min/max values for empty chart based on time.unit o…
jcopperfield Dec 15, 2017
3324b28
Add unittests
jcopperfield Dec 15, 2017
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7 changes: 4 additions & 3 deletions src/scales/scale.time.js
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Expand Up @@ -504,6 +504,7 @@ module.exports = function(Chart) {
var me = this;
var chart = me.chart;
var timeOpts = me.options.time;
var unit = timeOpts.unit || 'day';
var min = MAX_INTEGER;
var max = MIN_INTEGER;
var timestamps = [];
Expand Down Expand Up @@ -555,9 +556,9 @@ module.exports = function(Chart) {
min = parse(timeOpts.min, me) || min;
max = parse(timeOpts.max, me) || max;

// In case there is no valid min/max, let's use today limits
min = min === MAX_INTEGER ? +moment().startOf('day') : min;
max = max === MIN_INTEGER ? +moment().endOf('day') + 1 : max;
// In case there is no valid min/max, set limits based on unit time option
min = min === MAX_INTEGER ? +moment().startOf(unit) : min;
max = max === MIN_INTEGER ? +moment().endOf(unit) + 1 : max;

// Make sure that max is strictly higher than min (required by the lookup table)
me.min = Math.min(min, max);
Expand Down